OpGen stockholders approve reverse stock split at ratio of 5:1 to 20:1

2. Proposal 2 – Adjournment . At the Special Meeting, the Company’s stockholders voted upon and approved of an adjournment of the Special Meeting to a later date, if necessary or appropriate, to permit further solicitation and vote of proxies in the event that there are insufficient votes for, or otherwise in connection with, Proposal 1. Although the proposal was rendered moot because Proposal 1 was approved, the votes cast on this proposal were as follows: 2,217,223,118 votes FOR the proposal 1,167,870,545 votes AGAINST the proposal 22,592,642 votes ABSTAIN Not applicable Broker Non-Votes

1. Proposal 1 – Proposed Reverse Stock Split . At the Special Meeting, the Company’s stockholders voted upon and approved the amendment to the Company’s Amended and Restated Certificate of Incorporation, as amended (the “Charter”), to effect a reverse stock split at a ratio not less than five-to-one and not more than twenty-to-one, or the “Reverse Stock Split,” such ratio and the implementation and timing of such Reverse Stock Split to be determined in the discretion of our Board of Directors. The votes cast on this proposal were as follows: 2,272,904,153 votes FOR the proposal 1,117,675,862 votes AGAINST the proposal 17,106,289 votes ABSTAIN Not applicable Broker Non-Votes